Shaft couplings manufactured from plastic offer an excellent low cost equivalent to aluminium shaft couplings especially where the torque requirement is lower.

This product range offers you a quality range of plastic injection moulded shaft couplings giving high torsional stiffness combined with exceptional durability to shaft misalignment. There are two basic designs called UJ and GJ. Type UJ is for lighter usage and smaller angular and parallel shaft offsets, whilst type GJ, with its two flexible elements, is ideal for medium usage. The UJ & GJ series are available in a large  variety of bore combinations from 1.5mm to 12.00mm.

If you require a low cost, reliable, zero backlash shaft coupling, Abssac has the answer with its range of injection moulded flexible shaft couplings. Using the latest injection moulding techniques Abssac is able to supply a low cost, one piece, flexible shaft coupling to suit most rotary applications. Many people have asked us to supply a plastic shaft coupling for those types of application where a aluminium or stainless steel shaft coupling is just over kill for the application.

What you get is the use of the most advanced plastics compositions in a high quality, single piece construction at a low cost. There are three basic models capable of transmitting torques up to 8 kg/cm through 8 degrees of angular misalignment. Some of the plastics compositions are also reinforced with glass fibre to give it a higher torque capability.

 

Key product advantages;

  • RoHs Compliant
  • Low cost - High quality
  • No maintenance
  • Accept parallel and angular shaft misalignment's
  • High torsional stiffness
  • Accommodate axial compression
  • Zero backlash torque transmission
  • Provides thermal and electrical insulation between shafts
  • Exceptional durability
  • Trouble free set screw attachment to shaft
  • Large variety of bore combinations 1.5mm to 12.00mm
  • Constant velocity torque transmission under shaft offsets
  • Low radial loads
  • Low inertia

Coupling Type GJ - For higher duty

  • Double element design
  • Greater angular offset capability
  • Higher torque capability

Part Numbers

Coupling type GJ

GJ Dimensions

Typed1Possible bore combinations d2
(mm)
D
(mm)
L
(mm)
P
(mm)
B
(mm)
Metric Cap screw
M
Wrench Torque on
cap screw (Nm)
GJ1.51.5 ,29118.23.220.08
1.52.5, 310128.43.220.08
22913103.220.08
331220155.130.15
441321155.330.2
551421155.230.2
661522165.230.25
881924176.840.4
10102226187.140.5
G2J42.5, 3, 3.2, 41421165.330.25
53, 3.2, 4, 51520.5155.330.25
63, 3.2, 4, 5, 61621165.530.3
84, 5, 6, 82024166.840.45
GJK9.539.532532257.340.65
10102532257.340.65
12122834277.540.8
EGJ2 3, 4, 5, 6, 82222.316.75.441.2

TYPE GJ Performance

Bore Combination
(d1-d2)(mm)
Rated Torque
(Nm)
Max
(rpm)
Torsional stiffness
(Nm/rad)
Max Parallel offset
(mm)
Max Angular offet
(°)
Max allowable axial movement
(mm)
Inertia
(kg・m2)
Weight
(g)
Material
GJ1.5-1.50.184,0001.80.23±0.31.0×10-80.9Glass fibre reinforced PBT resin GFPBT
1.5-2
1.5-2.50.224,00020.23±0.31.4×10-81.1
1.5-3
2-20.184,0001.50.34±0.31.0×10-81
3-30.44,00040.45±0.34.5×10-82.5
4-40.64,00060.45±0.47.0×10-83.1
5-50.75,00080.55±0.49.0×10-83.3
6-60.86,000100.55±0.41.2×10-73.9
8-81.58,000200.55±0.43.9×10-77.3
10-10210,000320.55±0.47.0×10-710
G2J4-d20.85,000100.45±0.48.0×10-83.4
5-d20.96,000120.45±0.41.0×10-74
6-d216,000160.55±0.41.3×10-74.5
8-d21.78,000280.55±0.44.0×10-77.5
GJK9.53-9.53310,000350.54±0.41.3×10-615
10-10
12-123.612,000400.54±0.42.1×10-619
EGJ2 3mm up to 8mm0.812,000230.87±0.74.0×10-713Polyacetal with Brass insert for bore
  • Optimum operating temperature: Polyacetal -20°C~60°C (GFPBT:-30°C~85°C)
  • Please note that half the allowable torque is possible at the maximum allowable temperature.

 

Coupling type UJ - For lower duty

  • Type UJ is for lighter usage and smaller angular and parallel shaft offsets.
  • Single element design
  • Lower duty rated
  • Low inertia

 

Coupling type UJ

Type UJ Dimensions

Typed1Possible bore cominations d2
(mm)
D
(mm)
L
(mm)
P
(mm)
B
(mm)
Metric Cap screw
M
Wrench torque on
cap screw (Nm)
UJ22895.83.220.05
2.5312159.25.330.18
3312159.25.330.18
3.23.2A121595.430.2
43, 414159.5530.2
5514159.85.230.2
62.4, 3, 3.2, 4, 5, 615169.85.530.2
84, 5, 6, 81818135.530.25

Type UJ Performance

Bore Combination
(mm)
Rated Torque
Nm
Max
(rpm)
Torsional stiffness
(Nm/rad)
Max Parallel offset
(mm)
Max Angular offet
(°)
Max allowable axial movement
(mm)
Inertia
(kg・m2)
Weight
(g)
Material
UJ2-20.154,0001.80.053±0.150.5×10-80.7 
2.5-3
3-3
0.254,00020.14±0.20.4×10-72.3

P
o
l
y
a
c
e
t
a
l

 
3.2-3.2A0.454,00060.14±0.20.4×10-72.2

G
L
A
S
S
F
I
B
R
E

P
B
T

4-3
4-4
0.55,000100.15±0.30.6×10-72.4
5-50.75,00080.15±0.30.6×10-72.7
6-2.4
6-3
0.66,00090.15±0.30.8×10-73
6-3.2
6-4
6-5
0.76,000100.15±0.30.8×10-73
6-60.86,000100.15±0.30.8×10-73
8-4
8-5
8-6
8-8
1.06,000160.25±0.32.5×10-74 
  • Optimum operating temperature: Polyacetal -20°C~60°C, GFPBT:-30°C~85°C *
  • Wrench Torque on Cap screw should not exceed the stated figure
  • Please note that half the allowable torque is possible at the maximum allowable temperature.

 

If you require further technical information, please do not hesitate to contact our sales engineers who will be more than happy to help you with your selection.


Search   ABSSAC

x